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14 February, 03:07

3. Silver nitrate. AgNO. reden woh sodium chloride as:

Naci - AgNO3 - AgCl +

NaNO3

If 200ml of 0.2M NaCl was reacted with 100ml of 0.5M AgNO;

a) Calculate the number of moles of NaCl and AgNO; used in the

reaction.

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Answers (1)
  1. 14 February, 03:35
    0
    0.04mol of NaCl and 0.04mol of AgNO3

    Explanation:

    To calculate the numbers of mole of NaCl and AgNO3 used in the reaction, first we obtained their mole before the reaction as illustrated below:

    For NaCl:

    Molarity = 0.2M

    Volume = 200mL = 200/1000 = 0.2L

    Mole = ?

    Molarity = mole / Volume

    Mole = Molarity x Volume

    Mole = 0.2 x 0.2 = 0.04mol

    For AgNO3:

    Molarity = 0.5M

    Volume = 100mL = 100/1000 = 0.1L

    Mole = ?

    Molarity = mole / Volume

    Mole = Molarity x Volume

    Mole = 0.5 x 0.1 = 0.05mol

    NaCl + AgNO3 - > AgCl + NaNO3

    From the above equation,

    1mole of NaCl required 1mole of AgNO3.

    Therefore for, 0.04mol of NaCl will also require 0.04mol of AgNO3. This implies that AgNO3 is the excess reactant
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